Air quality index [µg/m3]:
excellent ≤ 20
good ≤ 60
lightly polluted ≤ 100
moderately polluted ≤ 140
heavily polluted ≤ 200
severely polluted > 200
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
1000107moderately pollutedgood221excellent
0900138moderately pollutedgood231excellent
0800115moderately pollutedexcellent191excellent
070099lightly pollutedexcellent191excellent
060091lightly pollutedexcellent151excellent
050082lightly pollutedexcellent181excellent
040078lightly pollutedexcellent191excellent
030073lightly pollutedexcellent171excellent
020083lightly pollutedexcellent151excellent
010086lightly pollutedexcellent131excellent
000084lightly pollutedexcellent122excellent
230091lightly pollutedexcellent111excellent
220094lightly pollutedexcellent121excellent
2100101moderately pollutedexcellent121excellent
200081lightly pollutedexcellent131excellent
190042goodexcellent91excellent
180025goodexcellent61excellent
170021goodexcellent51excellent
160023goodexcellent41excellent
150011excellentexcellent21excellent
140011excellentexcellent31excellent
130012excellentexcellent31excellent
120017excellentexcellent41excellent
110031goodexcellent91excellent